diff --git a/internal/oauth2.go b/internal/oauth2.go
index c0ab196..14989be 100644
--- a/internal/oauth2.go
+++ b/internal/oauth2.go
@@ -14,7 +14,7 @@
 
 // ParseKey converts the binary contents of a private key file
 // to an *rsa.PrivateKey. It detects whether the private key is in a
-// PEM container or not. If so, it extracts the the private key
+// PEM container or not. If so, it extracts the private key
 // from PEM container before conversion. It only supports PEM
 // containers with no passphrase.
 func ParseKey(key []byte) (*rsa.PrivateKey, error) {